Results 101 to 110 of about 6,262 (228)

Considering Pilot Protection in the Optimal Coordination of Distance and Directional Overcurrent Relays

Iranian Journal of Electrical and Electronic Engineering, 2015
The aim of the relay coordination is that protection systems detect and isolate the faulted part as fast and selective as possible. On the other hand, in order to reduce the fault clearing time, distance protection relays are usually equipped with pilot ...
Y. Damchi, J. Sadeh, H. Rajabi Mashhadi
doaj  

Enhancement of the operating time of the overcurrent relay of the distribution network with high-level penetration of renewable energy sources

Results in Engineering
The calculation of the output current of distribution generation (DG) units interfaced with an inverter during the fault is a major issue for isolated and grid-connected distributed networks. The droop control inverter interfaced DG has controlled output
Mahmoud Aref, Mahmoud A. Mossa, Emad Abdelkarim, Khairy Sayed, Mishari Metab Almalki, Alaa F.M. Ali   +5 more
doaj   +1 more source

Laboratory testing of the communication based protection relays [PDF]

, 2015
The proper operation of control and protection applications in Substation Automation System (SAS) demands very high-speed and reliable communications that has being achieved by using IEC 61850.
Daboul, M., Wasserbauer, V.
core  

Grid Forming Inverter With Increased Short-Circuit Contribution to Address Inverter-Based Microgrid Protection Challenges

IEEE Open Journal of the Industrial Electronics Society
Substantial differences in fault levels between grid-tied and islanded modes is one of the primary challenges of microgrid protection. During grid-tied mode, the bulk grid provides significant short-circuit, while during islanded operation the short ...
Maximiliano Ferrari, Leon M. Tolbert, Emilio C. Piesciorovsky   +2 more
doaj   +1 more source

Inverter-converter automatic paralleling and protection [PDF]

Electric control and protection circuits for parallel operation of inverter ...
Doughman, C. L., Lenhart, N. D., Marino, B. A.   +2 more
core   +1 more source

Optimal protection coordination for directional overcurrent relays in radial distribution networks with inverter-based distributed energy resources

International Journal of Electrical Power & Energy Systems
The optimal setting of directional overcurrent relays ensures the reliable protection and fast fault clearance of radial distribution networks. However, the increasing proliferation of inverter-based distributed energy resources can result in protection ...
Jie Li, Jingtong Feng, Min Huang, Shenquan Liu, Gang Wang   +4 more
doaj   +1 more source

Incorporating Modern Fault Ride-Through Standards into the Short-Circuit Calculation of Distribution Networks. [PDF]

Sensors (Basel), 2023
Pompodakis EE, Katsigiannis Y, Karapidakis ES.   +2 more
europepmc   +1 more source

Space programs summary no. 37-63, volume 1 for the period 1 March - 30 April 1970. Flight projects [PDF]

Mariner Mars 1971, Mariner Venus-Mercury 1973 and Viking Orbiter 1975 status ...

core   +1 more source

OVERCURRENT RELAY COORDINATION EFFECTS ON RELIABILITY INDICES

South African Journal of Industrial Engineering, 2012
<p>ENGLISH ABSTRACT: Mechanical equipment used on process plants can be categorised into two main types, namely static and rotating equipment. A brief survey at a number of chemical process plants indicated that a number of maintenance strategies ...
K. Mazlumi, A. Askarian Abyaneh
doaj  

The development of test beds to support the definition and evolution of the Space Station Freedom power system [PDF]

Since the beginning of the Space Station Freedom Program (SSFP), the Lewis Research Center (LeRC) and the Rocketdyne Division of Rockwell International have had extensive efforts underway to develop test beds to support the definition of the detailed ...
Frye, Robert J., Phillips, Rudy L., Soeder, James F.   +2 more
core   +1 more source